387
32072H–AVR32–10/2012
AT32UC3A3
register offset and the port offset to the GPIO start address. One bit in each of the configuration
registers corresponds to an I/O pin.
Table 20-1.
GPIO Register Memory Map
Offset
Register
Function
Name
Access
Reset value
0x00
GPIO Enable Register
Read/Write
GPER
Read/Write
(1)
0x04
GPIO Enable Register
Set
GPERS
Write-Only
0x08
GPIO Enable Register
Clear
GPERC
Write-Only
0x0C
GPIO Enable Register
Toggle
GPERT
Write-Only
0x10
Peripheral Mux Register 0
Read/Write
PMR0
Read/Write
(1)
0x14
Peripheral Mux Register 0
Set
PMR0S
Write-Only
0x18
Peripheral Mux Register 0
Clear
PMR0C
Write-Only
0x1C
Peripheral Mux Register 0
Toggle
PMR0T
Write-Only
0x20
Peripheral Mux Register 1
Read/Write
PMR1
Read/Write
(1)
0x24
Peripheral Mux Register 1
Set
PMR1S
Write-Only
0x28
Peripheral Mux Register 1
Clear
PMR1C
Write-Only
0x2C
Peripheral Mux Register 1
Toggle
PMR1T
Write-Only
0x40
Output Driver Enable Register
Read/Write
ODER
Read/Write
(1)
0x44
Output Driver Enable Register
Set
ODERS
Write-Only
0x48
Output Driver Enable Register
Clear
ODERC
Write-Only
0x4C
Output Driver Enable Register
Toggle
ODERT
Write-Only
0x50
Output Value Register
Read/Write
OVR
Read/Write
(1)
0x54
Output Value Register
Set
OVRS
Write-Only
0x58
Output Value Register
Clear
OVRC
Write-Only
0x5c
Output Value Register
Toggle
OVRT
Write-Only
0x60
Pin Value Register
Read
PVR
Read-Only
(2)
0x70
Pull-up Enable Register
Read/Write
PUER
Read/Write
(1)
0x74
Pull-up Enable Register
Set
PUERS
Write-Only
0x78
Pull-up Enable Register
Clear
PUERC
Write-Only
0x7C
Pull-up Enable Register
Toggle
PUERT
Write-Only
0x90
Interrupt Enable Register
Read/Write
IER
Read/Write
(1)
0x94
Interrupt Enable Register
Set
IERS
Write-Only
0x98
Interrupt Enable Register
Clear
IERC
Write-Only
0x9C
Interrupt Enable Register
Toggle
IERT
Write-Only
0xA0
Interrupt Mode Register 0
Read/Write
IMR0
Read/Write
(1)
0xA4
Interrupt Mode Register 0
Set
IMR0S
Write-Only
0xA8
Interrupt Mode Register 0
Clear
IMR0C
Write-Only
0xAC
Interrupt Mode Register 0
Toggle
IMR0T
Write-Only
0xB0
Interrupt Mode Register 1
Read/Write
IMR1
Read/Write
(1)